Blood sampling device

Abstract

A device (302) for sampling and / or analyzing blood or other body fluid of a subject. A housing (306) contains a plurality of lancets (308) and optionally includes test elements (324) to take up a sample of blood, an evaluation system and a display. A complete system that can be handled as a single device, for example in the form of a wristwatch, includes a multiplicity of test elements (324) and lancets (308), which can be brought successively to a working position to perform multiple measurements. A cassette or carrier (320) includes multiple lancets (308) and / or test elements (324), for insertion into the device.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims the benefit of priority to German Patent Application, Serial No. DE 10208575.7, filed 21 Feb. 2002, German Patent Application, Serial No. DE 10245721.2, filed 24 Sep. 2002, and German Utility Model No. DE 20213607.8, filed 21 Feb. 2002, the content of which are hereby incorporated herein by reference in their entireties. FIELD OF THE INVENTION [0002] The present invention relates generally to a medical sampling device, and more particularly to a multiple use device for minimally-invasive sampling of blood and / or other body fluids for detection and analysis. BACKGROUND OF THE INVENTION [0003] Various devices are known for sampling blood and other body fluids for analysis of the condition of a human or other animal. For example, U.S. Pat. No. 5,971,941 is understood to show a cassette with test strips for placement by a slider. A lancet pierces the skin surface so that blood can be obtained for analysis. The lancet...

AI Technical Summary

Benefits of technology

[0013] Various embodiments of the invention provide an “all-in-one” device which is compact, i.e., space-saving, and which is user-friendly and operator-friendly. Used test elements and / or lancets are preferably removed and replaced with unused test elements or lancets in a simple manner. The test element can, for example, be designed in the form of a membrane, which defines a measurement field that is wetted with the sample of blood taken, and which contains test reagents selected for the particular analysis to be performed. The analysis system can operate optically, for example, preferably by reflectometry, or electrochemically, or according to other means of analysis. In example embodiments, the test elements and / or the lancets are arranged into or onto a carrier or cassette, which can be inserted into the sampling device and which can be rotated or otherwise moved with respect to the housing, such that the test elements and / or lancets can be moved into working positions, located adjacent or apart from each other, as for example by rotating the carrier or cassette within the housing. Therefore, both the test elements and the lancets are preferably arranged on a rotatable carrier and can be moved into the working position, as by a rotary movement. A lancet is in its working position if it can be moved out through the puncture position to perform a puncture process. A test elements is in its working position if it can, in that position, be wetted with a sample of blood. The working positions of the lancets and the test elements can be adjacent or remote from one another. For example, the working position of the lancet can be at a 3-o'clock position on the housing and the working position of the test elements at a 6-o'clock position. Alternatively, the working positions for test elements and lancets are located at a single rotary position of the carrier by having the lancets arranged radially and the test elements arranged axially, for example by having the puncture position provided radially on the housing and the feed position provided axially on the housing.

[0045] According to an example embodiment of the invention, the lancets and / or the test elements are arranged concentrically about a point of rotation, so that they can be rotated into their individual operating positions. For that purpose, a first carrier for the lancets and a separate second carrier for the test elements are provided. To facilitate miniaturization of the device, the lancets, when arranged radially on the carrier, preferably leave a segment of a circle open so that the carrier can be inserted into the housing such that the plunger system extends into that circular segment. Because no lancet is placed in one circular segment (like a wedge of cake, which can cover for example 10° to 20° in the peripheral direction), the plunger system can penetrate in the radial direction into this region of the circular segment. Thus the plunger system does not hamper insertion of the carrier with the lancets into the housing. This further proves advantageous if, as described initially, a particular lancet and a plunger means of the plunger system are rotated relative to each other into a coupled connection.

Problems solved by technology

Known sampling devices have, however, not proven fully satisfactory to all users for a variety of reasons.

Images